Lawn Mower Safety Here's the heart or it... Push mower at 12 and riding mower at 16. Im certain all of us cut the grass wayyyyyy before then and we're still here. Are they nerfing kids nowadays? My dad would have kicked my ass into gear if I said no Sir I'm not old enough. I worked with a lady once and she said she drove her dad home from the bar at 13, she's 51 this year. Just thought it was odd for lawn mowing.